Fastener and slug-inserting machine



S A DOBYNE FASTENER AND SLUG INSERTING MACHINEL APPLlCATlON FILED JULY19, 1918- 1,394,478. Patented 00a 18, 1921.

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(STEP/92' A 005mm;

S. A. DOBYNE.

FASTENER AND SLUG INSERTING MACHINE. APPLICATION FILED JULY 9, 1918.

1,394,478. Patented Oct. 18, 1921.

6 SHEETS-SHEET 2- 6mm 675245 A. Dow WE,

S. A. DOBYNE.

FASTENER AND SLUG INSERTING MACHINE.

APPLICATION FILED JULY 19, 1913.

1,394,478,. Patented Oct. 18, 1921.

6 SHEETS-SHEET 3.

v s. A. DOBYNE. FASTENER AND SLUG INSERTING MACHINE.

APPLICATION FILED .IULY19, 1918.

Patented V0012, 18, 1921.

6 SHEETS-4H5 4.

. S. A. DOBYNE.

FASTENER AND SLUG INSERTING MACHINE.

APPLICATION FILED JULY 19, 191B- 1,394,478. Patented Oct. 18, 1921.

6 SHEETS-SHEET 5.

S. A. DOB YNE.

FASTENER AND SLUG INSERTING MACHINE.

. APPLICATION FILED JULY 19, 1918- 1,394,478. Patented Oct. 18, 1921.

6 $HEET8$HEEI a. P I?! 0 i E I 0 v d v i UNITED STATES PATENT OFFICE.

STEPHEN A. DOBYN E, OF ST. LOUIS, MISSOURI, ASSIGN'OR TO CHAMPION SHOEMACHIN- ERY COMPANY, OF ST. LOUIS, MISSOURI, A. CORiPOR-ATION OFMISSOURI.

FASTENER AND SL-UG-IN SERTIN G MACHINE.

Specification of Letters Patent.

Patented Oct. 18, 1921.

Application filed July 19, 1918. Serial No. 245,730.

To all whom it may concern:

Be it known that I, STEPHEN A. DoBYNE, a citizen of the United States,and residing at St. Louis, Missouri, have invented the new and usefulImprovement in Fasteners and Slug-Inserting Machines, of which thefollowing is a specification.

This invention relates to machines for inserting fasteners and slugs,and more particularly to machines adapted for operation on boots andshoes.

Metallic machines as used on boots and shoes, are used for two distinctoperations, namely, sole attaching and slugging operations. In the soleattaching operation, the fastener is driven through the sole andclenched on the insole, while in the slugging operation, a series ofwear resisting slugs are driven along the edge of the sole or heel toform a wear resisting surface. In the sole attaching operation, a headedfastener. that is, a fastener having a laterally projecting head, mustbe used in order to provide an anchorage in the outsole; the anchoragein the insole is, however, provided by the clench of the fastener pointon the anvil. In the slugging operation it is unnecessary to provide theslug with a head, since it performs only the function of a wearresisting member, and not of a fastening member. For economical reasons,therefore, the head is omitted.

In the sole attaching operation, the spacing of the fasteners isconsiderable, while in the slugging operation, the slugs are drivenclose together, sometimes as close as one-eighth of an inch. Now Where ametallic machine is adapted for both'of these operations, as is forinstance the case in repair shops, where duplication of machines is, foreconomical reasons, not desired, it is necessary to vary the feedconsiderably; sometimes this feed varies from three-thirty-seconds of aninch for slugging, to fifteenthirty-seconds of an inch for soleattaching. Now since an awl feed machine necessarily requires aconstruction in which the awl and the throat are movable into and out ofthe line of drive, a certain clearance movement must necessarily begiven to the awl, on account of the thickness of the throat wall betweenthe driver passage and the awl. With the ordinary constructionsproviding for a variation in feed, the clearance must, of course,necessarily increase with the feed movement, so that with a maximumfeed, the total movement given to the awl is necessarily great,resulting in great vibration and wearing of the awl cam. For thesereasons, therefore, the successful operation of a machine forinterchangeably inserting fasteners or slugs, requires the design ofspecial mechanism for imparting a work feeding movement to the awl, butin such a manner as to reduce the total movement to a least possibleminimum. Metallic machines are of various types, of which the principalones are loose nailing machines, wire nailing machines, and stringnailing machines. A loose nailing machine is not commercially adaptablefor both sole attaching and slug ing operations. A wire nailing machine,w ile adapted for slugging, is not adapted for sole attaching, for thereason that in sole attaching, it is absolutely essential to provide aheaded fastener in order to obtain an anchorage of the fastener in theoutsole.

A string nailing machine is, on the other hand, peculiarly adapted, whenproperly constructed, and when the string nail is properly designed, foreither sole attaching or slugging. For sole attaching, however, thestring of connected fasteners should be so constructed that eachfastener will have a laterally extending head to provide the necessaryanchorage in the outsole. For slugging, however, this head is not onlyunnecessary, but even undesirable, and should, therefore, be omitted.The result is, therefore, that in a machine for selectively insertingfasteners or slugs, and utilizing strings of connected fasteners and ofconnected slugs, the total width of a fastener string is greater thanthat of the slug string. As a matter of fact, the slug string width isabout that of the shank of a fastener on the fastener string.

On account of the peculiarities in the material operated upon, a machinefor selectively forming from strings of connected fasteners or slugs,detached fasteners or slugs, and for selectively driving such detachedfasteners or slugs, special provisions must be made, and specialproblems in design and construction are encountered. Thus, the mechanismfor guiding the strings of connected fasteners and connected slugs mustbe so designed and so coordinated with the mechanism for selectivelyfeeding these strings, and for selectively cuttlng or detachingfasteners or slugs from a selected string, that the mechanism can bereadily controlled or adjusted to feed a selected fastener string orslug string, and to cut from the selected string, a fasteneror a slug.Moreover, the throat or receiving member which receives and positions inthe line of drive, a detached slug or fastener, must be so constructedand coordinated with the mechanism for feeding and cutting, that themachine can be readily controlled to position in the threat at will, afastener or a slug. Moreover, the throat itself must be constructed toretain and properly direct or guide during the driving operation, eithera fastener or a slug. This requires development in design andconstruction, in order that a throat may interchangeably receive andcontrol during the driving operation, such radically different metallicelements, as a headed fastener and a headless slug.

It will thus be seen that the design and construction of a machineutilizing strings of connected fasteners and strings of connected slugs,and which will, at the will of the operator, drive either of thesemetallic elements, involves the solution of special problems, and theconstruction and coordination of special mechanism. 7

One of the objects of this invention, therefore, isto provide andproduce a machine, utilizing strings of connected fasteners andconnected slugs, which is so constructed and arranged as to selectivelypermit the formation from a selected fastener string or slug string, ofa fastener or slug, and the -driving of such a formed fastener or sluginto the work.

Another object is to provide a machine of this type with an awl feedmechanism, which is constructed and arranged for control, to adapt themachine for either fastening or slugging operations.

Further objects will appear from the detailed description taken inconnection with the accompanying drawmgs, in which,

Figure 1 is a. front elevation of a machine embodying this invention;

Fig. 2 is a side elevation from the right side ofthe machine;

Fig. 3 is an elevation from the left side of the machine;

Fig; 4 is an enlarged section on the line 44, Fig. 1', showing the awlmechanism;

7 Fig. 5 is a section on the line 55, Fig/1; Fig. 6 is a section on theline 6-6, Fig. 5;

Fig. 7 is an enlarged detail of the fastener and slug stock guidingmechanism;

Fig. 8 is a side elevation of Fig. 7;

Fig. 9 is a section on the line 99, Fig. 7

Fig. 10 is a section on the line 10-10, Fig. 8;

Fig. 11 is a section on the line 1111, Fig. 8;

Fig. 12 is a View showing the mechanism for shifting the nail guide;

Fig. 13 is a section on the line 1313, Fig. 12;

Figs. 14 1, 15, 16 and 17 are diagrams illustrating the operation of theawl feed mechanism; and,

Fig. 18 is a cam diagram showing the sequence of operation of the parts.

Referring to the accompanying drawings, and first more particularly toFigs. 1, 2 and 3, the machine there shown I is generally of theconstruction shown in Patent No. 1,286,559, December 3, 1918. Itcomprises generally, a column 1 upon which is mounted a machine head 2provided with bearings for sustaining the various movable parts, amongwhich is a main drive shaft 8, which is provided with a suitable clutchand brake (not shown). Fixed to this shaft are cam wheels 1, 5 and6,-each of which is provided on both of its side faces with groovedcams. A. suitable horn 7 supports the work against a presser foot 8, andthere is also provided, if desired, a welt guide 9, fixed to the machinehead. Pivoted at 10 on the machine head, is a throat 11, having a driverpassage with which cooperates a driver 12, attached to a driver bar 13,mounted in a suitable guide 14 on the machine head, and operated by acam in the right face (Fig. 2) of the cam wheel 4. Pivoted also at 10 isa nail guide 15,

grooved to receive a series of strands of connected nails. Pivoted at 17on the machine head is anarm '18 having pivoted thereto, an arm 19,normally moved in a counter-clockwise direction by a spring plunger 20,and having a feeding andcutting member 21, adapted to feed the string ofnails into the throat and cooperate with the throat to cut a nail fromthe string. The arm 18 and the cutter are. operated from a cam groove inthe left side (Fig. 2) of the cam wheel 6. The string nail guide 15 isheld by a spring 22 against a stop 23 on the machine head,

while the throat has connected therewith, an 'arm 24, operated by a camgroove in the right face (Fig. 2) of the cam wheel 5. Mounted in a guide25 on the machine'head is a slide 26, carrying an awl bar 27, providedat its lower end with an awl 28. This awl bar is reciprocated verticallyby means of an arm 29, on a rock-shaft 30, which has an arm 81, providedwith a cam roll engaging a cam groove in the right face (Fig. 2) of thecam wheel 6. The mechanism so far described,

except as hereinafter noted, is of substantially the construction asshown in my patent referred to.

The awl feed mechanism.

As pointed out above, in an awl feed machine it is necessary that thethroat and awl be movable into and out of the line of drive, so as toposition the awl hole in the line of drive to receive the fastener orslug. The distance between the center of the awl and the center of thedriver passage in the throat cannot, however, for constructionalreasons, be less than a given amount; as a matter of fact, in asubstantially constructed shoe machine, this distance cannot be lessthan ninethirty-seconds of an inch. This can readily be seen onreference to Figs. 14 and 15. Now if it is desired to space thefasteners, such as slugs, less than the distance between the awl and thedriver passage, then it is necessary to move the awl laterally while itclears the work, a distance equal to the difference between the spacingof the awl and the driver passage and the desired feed of the work. Inother words, the awl must be moved laterally from a position shown inFig. 14, to a position shown in Fig. 15, before this awl can be moveddownwardly to pierce the work. This means that the awl must be moved insuch a case, in successive steps, one of which is a clearing step, andthe other is a work feeding step, the awl being moved downwardly topierce the work during the dwell between the steps.

Where a single cam is used to move the awl laterally through bothsuccessive steps with a dwell therebetween, then the clearing andfeeding movements have fixed definite relations, so that one willnecessarily increase with the other. Thus, where as in Fig. 16, (topdiagram) the machine is set, for instance, for its minimum feed offivethirtyseconds of an inch, the clearing movement must necessarily befour-thirtyseconds of an inch. I-f now the machine is set for, forinstance, the maximum feed, Fig. 16, (lower diagram) of say,fifteenthirty-seconds of an inch, then the clearing movement willnecessarily be twelve-thirtyseconds of an inch. In other words the totaltravel of the awl for a maximum feed will be twenty-seventhirty-secondsof an inch, that is, nearly twice the effective feed movement of theawl. In view of the fact, however, thatthese machines are made to run athigh speeds, such an excessive travel of the awl and its supportingslide, causes undue vibration of the machine, very soon wears out thecam, and in fact, tears the machine to pieces.

In accordance with this invention, the awl is moved laterally insuccessive steps with an intervening dwell. The first step is a workclearing step and the awl is at that,

time clear of the work; the second step is a. work feeding step and theawl is at that time in the work. Separate actuating cams are providedfor imparting to the awl these separate successive movements. Adjustingor controlling mechanism is provided for adjusting or controlling thefeed movement of the awl, and this also adjusts or controls the clearingmovement; the clearing movement, however, decreases as the feedingmovement increases, from a maximum clearing movement, corresponding to aminimum feeding movement, to zero clearing movement, corresponding tomaximum feed movement of the awl.

Referring now to Figs. 1 to 6 inclusive, 35 designates a lever pivotedat 36, and having its lower. end engaging a stud 37 on the feed slide26, and provided. at its upper end with a cam roll '33. engaging a camgroove 39 in the cam wheel 4. The pivot 36 of the lever 35, is in theform of a stud, which has a block 40 sliding in a guideway 41 on thelever 35. This stud fixed to a shank 42, sliding in a guide-way 43 in acrank 44, fixed to one end of a rock-shaft,

the other end of which has fixed thereto an arm46, provided with a camroll 47, moving in a cam groove 48 in the cam wheel 5. The shank 42 isprovided with teeth 49 meshing with a toothed shaft 50, mounted in thebushing 51 in the crank 44, and provided with an arm Mounted between anut 53 and the crank 44, is a plate 54 provided with an arm 55, and witha cam surface 56, engaging a locking pin 57, which slides freely in abearing in the crank, and bears against a flattened portion 58 on theshank 42. The cam rolls 38 and 4'? are mounted on studs which areeccentrically mounted in the ends of the arms 35 and 46 respectively,the ends of these arms being split and adapted to be clamped on theeccentric studs. This enables the cam rolls to be adjusted with respectto the cam grooves, and locked in adjusted position.

The cam groove 48 is adapted to impart to the feed slide and the awlthereon, the work clearing movement, while the cam groove 39 imparts thework feeding move ment, the awl piercing cam operating the arm 31 andthe awl connected therewith, to cause the awl to pierce the work duringthe dwell between the clearing and feeding movements of the awl. This isclear from the cam diagram, Fig. 18. lVhen the stud 36 is opposite thecenter of the rock-shaft 45, the feeding movement by the cam groove 39is a maximum. It will be noted, however, that at this time, the clearingmovement will be zero, as the movement of the arm 46 by the cam groove48, will, at this time, have no effect whatsoever upon the feed slide.As,

however, the stud 36 moves down with its shank 42, and away from thecenter, of the -rock-shaft 45, the feeding movement of the feed slide bythe cam groove 39, will be decreased, but the clearing movement of thefeed slide by the cam groove 48, will be increased. In the lowestposition of the stud 36, the feed movement will be a minimum, while theclearing movement will be a maximum. It will, of course, be understoodthat the shank 42 is adjusted after releasing the pin 86, as shown. inFig. 6, by turning the handle 52, and after the shank 42 has been set inadjusted position, this shank is locked by moving the handle 55 towardthe observer.

Fig. 17 shows the actual operation. The cam grooves 39 and 4:8, and thearms 35, 46 and 44, are so proportioned, that with a minimum feed, theclearing movement of the awl will be sufficient, so that the feedmovement plus the clearing movement will equal, or be slightly greaterthan, the distance between the center of the throat and the center oftheawl. Thereafter, with an increase of feed, as pointed out heretofore,the clearing movement will decrease uniformly, so that with a maximumfeed movement, as shown in the lower diagram Fig. 17, the total movementof the awl will be a feeding movement, in that the clearing movement isat this time reduced to zero, on account of the fact that the stud 36 isat this time opposite the center of the shaft 45.

It will, therefore, be seen that with this construction, the maximummovement of the feed slide can never be greater than the maximum feedmovement of the awl, so that this maximum movement is nearly cut inhalf, as compared to a construction in which a single cam groove oractuator is used, as illustrated in Fig. 17. With this construction,therefore, the vibration of the feed slide is reduced toa minimum.

The presser foot.

The presser foot is fully described in my application Serial Number174:,096, filed June 11, 1917. As shown and described in saidapplication, the presser foot is mounted on a carrier 60, pivoted at 61to the machine head,so as to adapt the presser foot for verticaladjustment, so as to Vary the position of its lower face with respect tothe lower limit of movement of the bottom of the driver. This presserfoot is adjusted by an actuator 64. The extent of the insertion of thefasteners can, therefore, be readily varied by adjusting the presserfoot, so as to cause the fasteners to be inserted countersunk, flush, orslightly protruding from the upper face of thefwork. The machine is,therefore, adaptable to different classes of work, without requiringreadjustment, of the The feeding and cutting mechanism.

The feeding and cutting mechanism is fully described in my applicationSerial Number 17 4:,096, filed June 11, 1917, referred to. Referring toFigs. 1 and 3, shaft 17 has fived thereto, an arm 75, which isyieldingly connected through a spring 85, with an arm 79, having a camroll engaging a cam in the right side (Fig. 3) of the cam wheel 6. Itwill, therefore, be seen that there is a yielding connection between thecam and the arm 18. The spring 85 is, of course, strong enough so as tocause the cutter to move the nail guide 15, and against the die plate76, (Fig. 7) on the throat tocut off a nail. If, however, the drivershould break and project from the throat, so as to prevent movement ofthe nail guide to the right, Fig. 1, to feed the string and cut off thenail, then the spring 85 will yield and thus prevent breaking orshifting of the feeding and cutting blade 21 in its arm 19.

The guiding mechanism.

Referring now to Figs. 7 to 11 inclusive, the nail guide 15 is mountedon a plate 88 which, as heretofore referred to, is pivoted at 10. Thisplate has a laterally projecting arm 89, provided with-a laterallyprojecting pin 90, to one end to which is attached the spring 22. Thearm 89 has a laterally projecting'lug 91, bearing against the stop 23which, as shown, is eccentrically mounted in the machine head, so as topermit adjustment thereof, to aline the nail guide 15, with a driverpassage 77 in the throat.

The nail guide is provided with a series of vpecific embodiment shown,the nail guide is rovided with a series (in thiscase three) of eepgrooves 78, adapted each to receive a string of connected fasteners F,and with a shallow groove 80, adapted to receive a string ofconnectedslugs 'S. The string of connected fasteners F, as shown inFigs. 7 and 10, is constructed so as to provide a series of headedfasteners connected end to end; the string of connected slugs S,however, is constructed to provide a series of headless slugs connectedend to end. The shank width of a slug is substantially the same as theshank width of a fastener. Accordingly, in order to enable the feedingmember 21 to properly engage the head end of a slug on the string S, itis necessary that the groove 80 be shallow, and that the nail guide beundercut, as shown at 81, to permit proj notion of the slug edge beyondthe groove 8O. as shown in Fig. 11.

Pivoted at 92 on the plate 88 isan arm 93,

rooves adapted to receive the stock. In the which is connected by a link94 with an arm 95, pivoted at 90 on the arm 89, and having a handle 96.Attached to a laterally projecting lug 97 on the arm 93, is a plate 98,which is stepped to provide a series of guards 99, overlying thefastener string groove 78, and providing a guard 100, overlapping theslug string groove 80. These guards provide stop pawls adapted to engagethe head ends of the fasteners or slugs on the strings, and adapted tobe engaged by the feeding and cutting member 21, so as to permit thefeed of only one fastener or slug at a time. It will, of course, be seenthat the stepping of the plate 98, to provide the guards 99, permits thefastener string grooves 78 to receive strings of fasteners of differentlengths. Overlying the plate 98 is a spring plate 101, which keeps theguards undertension. This plate is apertured, as shown at 102, so as topermit insertion of the strings of nails therein. Attached also to theplate 97 is a spring plate 103, which has a rounded extremity 10 1bearing against the nail guide for the purpose of holding the strings inthe guide grooves 78 and 80.

When the parts are in full line position, as shown in Fig. 7, with thecrank 95 over center, the guards will be held in engagement with theguide 15, and since these guards are at this time under tension, theparts'will be held in locked position. When, however, the handle 96 ismoved to dotted line position, the guards are swung out of engagementwith the guide, thereby permitting ready re moval of the string orstrings from the guide.

The nail guide shifting mechanism.

Referring now to Figs. 1, 2, 3, 12 and 13, the shaft 10 of the nailguide is mounted for rotating and sliding movement in a bearing 110, inthe machine head 2. Fixed to this shaft 10 is a grooved collar 111,which is held in its normal position with the slug guide groove 80, inalinement with the driver passage, and the feeding and cutting blade 21,by a spring 112, encircling the shaft 10, and bearing at one end againstthe collar 111, and at its other end against the bearing 110. Thiscollar is engaged by the forked arm 11.3 ofa lever pivoted at 114- on abracket 115, mounted on the machine head. The other arm 116 of thislever, has pivoted thereon at 117, a handle 118, so that by manipulationof the handle 118, the lever may be swung on its pivot 11 1, to shiftthe shaft 10 endwise, in order to shift the string nail guide 15, so asto aline any selected fastener or slug groove 78, 80, with, and incooperative relation with respect to, the feeding and cutting blade 21and the throat 77. In order to locl the actuating lever 116 and,therefore, the string nail guide, in any position of adjustment, thehandle 118 is provided with an extension 119, bearing a spring pressedplunger 120, adapted to engage with and enter a series of depressions122, in a sector 123 on the bracket 115. To firmly hold the plunger 120in its depression, a spring 12% is provided, which engages at one endwith an extension 125, on the arm 118, and at its other end with anextension 126, on the lever arm 116. Vith this construction the operatorcan at pleasure, by manipulation of the handle 118, shift the stringnail guide to aline any one of the guide grooves in alinement with thefeeding and cutting blade and the throat, and the parts will be lockedin any position of adjustment.

The throat or receiner.

Referring now to Fig. 7, the throat 11, as shown, is provided with arecess 180, in which projects a fastener or slugguiding or directingmember 131, provided with a fin 132 projecting into the driver passage.This member 132 is pivoted at 133 in the recess 130, and is moved intothe driver passage by a plunger 134e, engaged by a spring 135, in a tube136, screwed into the throat. The fin 132 has a projection 137, adaptedto engage the throat wall for the purpose as hereinafter described.

The fin 132 is so formed and spaced from the opposite throat wall, so asto enable it to receive the headed fastener which is fed into and cutoff in the driver passage. In order, however, that a slug may beproperly retained and drivenin and through the same driver passage, itis necessary to provide means which will accommodate itself to a headedfastener with a laterally projecting head, and to a slug having a shankabout the size of a fastener shank. It is for this purpose that theprojection 137 is provided on the fin. This projection retains the slugin the driver passage, as shown in Fig. 7, and being beveled, it yieldswhen the fastener is being driven by the driver, and engages with theedge of the slug or the shank of the fastener as the slug or fastener isdriven into the work, so as to hold either the slug or the fastenerfirmly against the opposite driver passage wall, in order that the slugor fastener will be directed and guided while it is being driven. Itwill, therefore, be seen that the throat is adaptable to either a headedfastener or a slug.

Rsum 0 f operations.

In the general operation of this machine, and starting with the awl up,the awl will be moved laterally, executing a clearing movement, and thisawl will thereafter descend into the work to form a puncture therein. Atthis period the horn is depressed to un clamp the work, and the awl willnow be given a feeding movement to feed the puncture into the line ofdrive. During the lateral movement of the awl, the throat will haveswung out of the line of drive. (That is the line on which the fasteneris driven and which passes vertically through the horn, and the driverand throat when above the horn tip). The puncture having been placed inthe line of drive with the feeding movement of the work completed, theawl is retracted and begins to return, followed by the throat, which isnow moved into the line of drive. While the throat is out of the line ofdrive, so that the driver passage will be in alinement with the stringnail guide, the feeding mechanism will operate to feed a string ofconnected nails or slugs into the throat, and out off the lowermost nailfrom the string to position a cut fastener or slug in the throat. As thethroat moves back into the line of drive, the driver descends to drivethe fastener or slug positioned in the driver passage, into the punctureformed in the work and positioned at this time in the line of drive.

' (that is into a vertical plane passing through the driver, horn, awland the feeding and cutting mechanism) and into cooperative relationwith respect to the feeding and out ting mechanism, and with respect tothe throat; the work feeding mechanism is, however, also shifted,adjusted or controlled, so

as to adapt the operation of the awl to the position to which the nailguide is shifted. Thus, for instance,the nail guide is shifted to permitthe forming and driving ofa certain size of fastener, and the workfeeding mechanism is adjusted or controlled to bring the work feedingmechanism in accord with the selected fastener. This means, of course,that for fastening operation, the feed of the work must be increased toa maximum, and this can be accomplished with the awl feed mechanismembodying this invention, with a minimum movement of the actuatingmechanism, on account of the fact that the clearance movement decreasesto a minimum with the increase of the awl feeding movement required forfastening operation.

When it is desired to convert the machine into aslugging machine, theoperator will shift the string nail guide to position the slug stringgroov'ein proper cooperative relation with the feeding and cuttingmechanism and the throat, in order to position the slug string in theline of drive; the work feeding mechanism is also, at this time, ad-

justed to a minimum, so as to adjust the feeding movement of the awl inaccordance with the position of the string nail guide, in order to adaptthe machine for slugging operation. The clearing movement of the awl is,of course, at this time, a maximum, but since the feeding movement is aminimum, the total movement of the awl is not excessive, and is, infact, a minimum.

It will, therefore, be seen that the invention accomplishes its objects.An awl feed string nailing machine is produced which utilizes strings ofconnected fasteners and connected slugs, in which the parts are soconstructed, arranged and coordinated, as to selectively permit theformation from a selected fastener string or slug string, of a fasteneror slug, and permit the driving of such a formed fastener or slug intothe work. The nail guide has a special construction adapting it forguiding strings of connected fasteners, and a string of connected slugs,and thisnail guide is so constructed and so coordinated with the feedingmechanism and the throat, as to permit a selected fastener string or aselected slug string to be shifted at willin the line of drive, topermit the feeding of either a selected fastener string,

or a selected slug string'into the throat. The

throat itself is constructed and arranged to receive and guide, duringthe driving operation, either a fastener or a slug. The awl feedmechanism is constructed to permit ts instant adjustment from a maximumfeed required for fastening operation, to a minimum feed required forslugging operation, at the same time maintaining the lowest possiblemovement of the awl actuating mechanism.

It is obvious that various changes may be made in the details withoutdeparting from the spirit of this invention. It is, therefore, to beunderstood that this invention is not to be limited to the specificconstruction shown and described.

Having thus described the invention, what is claimed is:

' 1. In a machine for selectively inserting and means for moving saidawl and said throat into and out of the line of drive;

2. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding strings ofconnected fasteners and connected slugs,

a throat adapted to selectively receive the strings from said guidingmeans, feeding and cutting means, constructed and arranged toselectively feed the strings by engagement with the head end of afastener or slug on a selected string, and constructed and arranged tocut the selected string, adaptedto selectively position a cut fasteneror slug in said throat, work puncturing and feeding mechanism includinga work feeding awl, means for moving said awl and said throat into andout of the line of drive, and means for adjusting said work puncturingand feeding mechanism, constructed and arranged to selectively adapt themachine for fastening and for slugging-operations.

3. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding strings ofconnected fasteners and connected slugs, a movable receiver adapted toselectively receive the strings from said guiding means, feeding andcutting means, constructed and arranged to selectively feed the stringsby engagement with the head end of a fastener or slug on a selectedstring, and constructed and arranged to cut the selected string,

adapted to selectively position a cut fastener or slug in said receiver,means for moving said receiver to position the fastener or slug thereinin the line of drive, and work puncturing and feeding mechanismincluding an awl cooperating with said other elements to feed the Workand place the puncture formed therein in the line of drive.

4. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding strings ofconnected fasteners and connected slugs, a movable receiver adapted toselectively receive the strings from said guiding means, feeding andcutting means, constructed and arranged to selectively feed the stringsby engagement with the head end of a fastener or slug on a selectedstring, and constructed and arranged to cut the selected string, adaptedto selectively position a cut fastener or slug in said receiver, meansfor moving said receiver to position the fastener or slug therein in theline of drive, work puncturing and feeding mechanism including an awlcooperating with said other elements to feed the Work and place thepuncture form ed therein in the line of drive, and means for adjustingsaid work puncturing and feeding mechanism, constructed and arranged toselectively adapt the machine for fastening and for slugging operations.

5. In a machine for selectively inserting fasteners or slugs, thecombination with a horn or work support positioned in the line of drive,of a work feeding awl, adriver, a throat adapted to selectively receivea fastener or a slug, meansfor selectively guiding strings of connectedfasteners or slugs into said throat, means constructed and arranged tofeed a selected fastener or slug string into said throat by engagementwith the head end of a fastener or slug on the selected string, andconstructed and arranged to cut the end fastener or slug from theselected string, adapted to position a cut fastener or slug in .saidthroat, and means for moving said throat and said awl into and out ofthe line of drive.

' 6. In a machine for selectively inserting fasteners or slugs, thecombination with a horn or work support positioned in the line of drive,of a work feeding awl, a driver, a throat adapted to selectively receivea fastener or a slug, means for selectively] connected fasteners orguiding strings of slugs into said throat, means constructed andarranged to feed a selected fastener or slug string into said throat byengagement with the head end of a fastener or slug on the selectedstring, and constructed and arranged to cut the end from the selectedstring, adapted to position a cut fastened or slug in said throat, meansfor moving said throat and said awl into and fastener or slug out of theline of drive, and means for adjusting said awl, constructed andarranged to selectively adapt the machine for fastening and for sluggingoperations.

7. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of fastener controlling mechanismincluding means for guiding strings of connected fasteners and.connected slugs, a throat adapted to selectively re ceive the stringsfrom said guiding means, feeding and cutting means, constructed andarranged to selectively feed the strin 's by engagement with the headend of a fastener or slug on a selected string, and constructed andarranged to cut the selected string, adapted to selectively position, acut fastener or slug in said throat, Work puncturing and feedingmechanism including a work feeding awl, means-for moving said awl andsaid throat into and out of the line of drive, and means for adjusting,said mechanisms, constructed and arranged to selectively adapt themachine for fastening and for slugging operations.

8. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of fastener controlling mechanismincluding means for guiding strings of connected fasteners and connectedslugs, a movable receiver adapted to selectively receive the stringsfrom said guiding means, feeding and cutting means, constructed andarranged to selectively feed the strings by engagement with the head endof a fastener or slug on a selected string, and constructed and arrangedto cut" the selected string, adapted to selectively position a cutfastener or slug in said receiver, means for moving said receiver toposition the fastener or slug therein in the line of drive, workpuncturing and feeding mechanism including an and cooperating with saidother elements to feed the Work and to place the puncture formed thereinin the line of drive,

and means for adjusting the said mecha-.

nisms, constructed and arranged to selectively adapt the machine forfastening and for slugging operations. V

9.; In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding strings ofconnected fasteners and connected slugs, a throat adapted to selectivelyreceive the strings from said guiding means, feeding and cutting means,constructed and arranged a said throat into and out of the line ofdrive,

and means for adjusting said guiding means and said workpuncturing andfeeding mechamsm, constructed and arranged 'to selectively adapt themachine for fastening and for slugging operations.

10) In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding strings ofconnected fasteners and connected slugs, a movable receiver adapted toselectively receive the strings from said guiding means,

feeding and cutting means, constructed and,

arranged to selectively feed the strings by engagement with the head endof a fastener or slug on a selected string, and constructed and arrangedto cut the selected string,

adapted to selectively positiona cut fasteneror slug in said receiver,means formoving said receiver to position the fastener or slug thereinin the line of drive, work puncturing and feedin mechanism including anawl cooperating with said other elements to feed the work and to placethe puncture formed thereinin the line of drive, and means for adjustingsaid guiding means and said work 'puncturing and feeding mechanism, con

structed and arranged to selectivelyadapt the machinefor fastening andfor slugging operations, V

11. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, .of fastener controlling mech anismincluding means for guiding strings meagre of connected fasteners andconnected slugs, a throat adapted to selectively receive the stringsfrom said guiding means, feeding and cutting means, constructed andarranged to selectively feed the strings by engagement With the head endof a fastener or slug on a selected string, and constructed and arrangedto' cooperate with said throat tocut the selected string, adapted toselectively position a cut fastener or slug in said throat, workpuncturing and feeding mechanism including a work feeding awl, means formoving said awl and said throat into and out of the line of drive, andmeans for adjusting, said'mechanisms, constructed and arranged toselectively adapt the machine for fastening and for slugging operations.1

12. In a machine for selectively inserting fasteners 01 slugs, thecombination 1 with driving means, of fastener controlling mechanismincluding a guide for strings of connected fasteners and connectedslugs, a throat adapted to selectively receive afastener string or aslug string from said guide, feeding and cutting means, constructed andarranged to feed a selected string into said throat by engagement withthe head end of a fastener or slug on the selectedjstringand constructedand arranged to cooperate with said throat to cut the selected string,adapt ed to selectively position a cut fastener or slug in said throat,Work puncturingjand feedin mechanism including a work feed ing awl,means for moving said awland said throat into and out of the lineofdrive, and means for adjusting said mechanisms, constructed andarranged to selectively adapt the machine for fastening and for sluggingoperations. 1 I 3 13. In a machine forselectively inserting fasteners orslugs, the combination" with driving means, of fastener controllingmechanism including a guide for strings of connected fasteners andconnected slugs, a threat adapted to selectively receive a fastenerstring or a slug string from said guide, a feeding and cutting memberconstructed and arranged to engage the head end of a fastener or slug ona selected string to feed said string into said throat and to thereaf-ftercut said string, adapted to selectively position a cut fastener orslug in said throat, work puncturing and feeding mechanism inf eluding aWork feeding awl, means for moving said and and said throat into and outof the line of drive, and meansfor adjusting saidmechanisms, constructedand" tener string or a slug string from said guide, a feeding andcutting member constructed and arranged to engage the head end of afastener or slug on a selected string to feed said string into saidthroat and to thereafter cooperate with said throat to out said string,adapted to selectively position a cut fastener or slug in said throat,work puncturing and feeding mechanism including a Work feeding awl,means for moving said awl and said throat into and out of the line ofdrive, and means for adjusting said mechanisms, constructed and arrangedto selectively adapt the machine for fastening and for sluggingoperations.

15. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of fastener controlling mechanismincluding means for guiding fastener stock and slug stock, means forselectively receiving and placing the fastener stock or the slug stockin position to be driven by said driving means, work puncturing and feeding mechanism cooperating with said other elements, adapted to punctureand feed the work and place the puncture in the line of drive, wherebyselectively a fastener or a slug is placed to be driven by said. drivingmeans into said puncture, and means for adjusting said mechanisms,constructed and arranged to selectively adapt the machine for fasteningand for slugging operations.

16. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of fastener controlling mechanismincluding means for guiding fastener stock and slug stock, means forselectively receiving the fastener stock or the slug stock, means forselectively feeding and for selectively cutting the fastener stock orthe slug stock, adapted to selectively place in said receiving means a.fastener or slug, work feeding and puncturing means coooperating withsaid other elements, adapted to place the puncture in the line of drive,whereby selectively a fastener or a slug is placed to be driven by saiddriving means into the formed puncture, and means for adjusting saidmechanisms, constructed and arrangedto selectively adapt the machine forfastening and for slugging operations.

17. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding fastener stock andslug stock, means for selectively receiving the fastener stock or theslug stock, means for selectively feeding and for selectively cuttingthe fastener stock or the slug stock, adapted to selectively place insaid receiving means a cut fastener or slug, work feeding and puncturingmeans co'o'operating with said other elements, adapted to place thepuncture in the line of drive. whereby selectively a fastener or a slugis placed to be driven by said driving means into the formed puncture,and means for selectively adjusting said work puncturing and feedingmeans, constructed and arranged to selectively adapt the machine forfastening and for slugging operations.

18. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding fas-.

tener stock and slug stock, means for selectively receiving the fastenerstock or the slug stock, means for selecting feeding and for selectivelycutting the fastener stock or the slug stock, adapted to selectivelyplace in said receiving means a fastener or slug, work feeding andpuncturing means cooperating with said other elements, adapted to placethe puncture in the line of drive whereby selectively a fastener or aslug is placed to be driven by said driving means into the formedpuncture, means for adjusting said guiding means, and means foradjusting said work feeding and puncturing means in accordance with saidguiding means, constructed and arranged to selectively adapt the machinefor fastening and for slugging operations.

19. A, machine for selectively inserting fasteners or slugs, havingdriving means, means for guiding fastener stock or slug stock, means forselectively feeding and cut ting fastener stock or slug stock, means forselectively receiving and placing the fastener stock or slug stock inthe line of drive, and work puncturing and feeding mechanism including awork feeding awl movable into and out of the line of drive,characterized by means for selectively adjust-ing said fastener and slugstock controlling means and said work feeding and puncturing mechanism,constructed and arranged to selectively adapt the machine for fasteningand for slugging operations.

20. A machine for selectively inserting fasteners or slugs, havingdriving means, means for guiding fastener stock or slug stock, means forselectively feeding and for selectively cutting fastener stock or slugstock, means for selectively receiving and placing a fastener stock orslug stock in the line of drive, and work puncturing and feedingmechanism including a work feeding and movable into and out of the lineof drive, characterized by means for moving said awl to clear the workand to feed the work, and means for selectively adjusting said fastenerand slug stock controlling means and the feeding movement of said awl,constructed and arranged to selectively adapt the machine for fasteningand for slugging operations.

21. A machine for selectively inserting fasteners or slugs, havingdriving means means for guiding fastener stock or slug stock, means forselectively feeding and for selectively cutting fastener stock or slugstock, means for selectively receiving and placing the fastener stock orslug stock in the line of drive, and work puncturing and feedingmechanism including a work feeding awl movable into and out. of the lineof drive, characterized by means for moving said awl to clear the workand to feed the work, and means for increasing the feeding movement ofsaid awl without increase of its clearing movement, constructed andarranged to adapt the machine for fastening and for slugging operations.

22. A machine for selectively inserting fastenersor slugs, havingdriving means, for guiding fastener stock or slug stock, means forselectively feeding and for selectively cutting fastener stock or slugstock, means for selectively receiving and placing the fastenerstock orslug stock in the line of drive, and work puncturing and feedingmechanism including a work feeding awl movable into and out of the lineof drive, characterized by means for moving said awl to clear the workand to feed the work, and means for increasing the feeding movement ofsaid awl adapted to decrease its clearing movement, constructed andarranged to selectively adapt the machine for fastening and for sluggingoperations.

23. A machine for selectively inserting fasteners or slugs, havingdriving means, means for guiding fastener stock or slug stock, means forselectively feeding and for selectively cutting fastener stock or slugstock, means for selectively receiving and placing the fastener stock orslug stock in the line of drive, and work puncturing and feedingmechanism including a work feeding and movable into and out of the lineof drive, characterized by means for moving said awl to clear the workand to feed the work, and means for varying the feeding movement of saidawl adapted to eliminate its clearing movement with maximum feed ingmovement of said awl, constructed and arranged to selectively adapt themachine for fastening and for slugging operations.

24. A machine for selectively inserting fasteners or slugs, havingdriving means, means for guiding fastener stock or slug stock, means forselectively feeding and for selectively cutting fastener stock or slugstock, means for selectively receiving and placing the fastener stock orslug stock in the line of drive, and work puncturing and feedingmechanism including a work feeding awl movable into and out of the lineof drive, characterized by means for selectively adjusting said workfeeding and puncturing mechanism, constructed andarranged to move saidawl in a single step during the insertion of fasteners and in successivesteps during the insertion of slugs.

25; In a machine for selectively inserting fasteners vor slugs, thecombination with driving means, of means for. guiding strings ofconnected fasteners and connected slugs, means for receivingfasteners'and slugs to be driven by said driving means, means forfeeding and for cutting a selected string, and means for adjusting saidguiding means with respect to. said receiving means, all constructed andarranged to selectively position in said receiving means a fastener or aslug.

26. In a machine for selectively inserting fasteners 0r slugs, thecombination with driving means, of means for guiding strings ofconnected fasteners of different lengths and a string of connectedslugs, means for receiving fasteners and slugs to be driven by saiddriving means, means for feeding and for cutting a selected string, andmeans for adjusting said guiding means with respect to said receivingmeans, all constructed and arranged to selectively position in saidreceiving means a fastener or a slu 27. In a machine for selectivelyinserting fasteners or slugs, the combination with a driver, of a guidefor strings of connected fasteners and connected slugs, a throat adaptedto receive a selected string, means for feeding and for cutting aselected string, and means for adjusting said guide with respect to saidthroat, allconstructed and arranged to selectively position in saidthreat a fastener or a slug.

28. In a machine for selectively inserting fasteners or slugs, thecombination with a driver, of a guide for strings of connected fastenersof different lengths and a string of connected slugs, a throat adaptedto receive a selected string, means for feeding and for cutting aselected string, and means for adjusting said guide with respect to saidthroat, all constructed and arranged to selectively position in saidthroat a fastener or a slug.

29. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding strings ofconnected fasteners and connected slugs, means for receiving fastenersand slugs, to be driven by said driving means, means for feeding and forcutting a selected string a work feeding awl, means for moving said awland said receiving means into and out of the line of drive, and meansfor adjusting said guiding means with respect to said receiving means,all constructed and arranged to selectively position in said receivingmeans a fastener or slug.

80. In a machine for selectively inserting fasteners or'slugs, thecombination with a driver, of a guide for strings of connected fastenersand connected slugs, a throat adapted to receive a selected string,means for feeding and for cutting a selected string, a work feeding awl,means for moving said awl and said throat into and out of the line ofdrive, and means for adjusting said guide with respect to said throat,all constructed and arranged to selectively position in said throat afastener or a slug.

31. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, f means for guiding strings of connectedfasteners and connected slugs, means for receiving fasteners and slugsin the plane of drive, means for feeding and for cutting a selectedstring when positioned in the plane of drive, and means for selectivelypositioning a selected string in the plane of drive, constructed andarranged to position in said receiving means a selected cut fastener orslug to be driven by said driving means.

32. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding strings ofconnected fasteners of different lengths and a string of connectedslugs, means for receiving fasteners and slugs in the plane of drive,means for feeding and for cutting a selected string when positioned inthe plane of drive, and means for selectively positioning a selectedstring in the plane of drive, constructed and arranged to position insaid receiving means a selected cut fastener or slug to be driven bysaid driving means.

83. In a machine for selectively inserting fasteners or slugs, thecombination with a driver, of a guide for strings of connected fastenersand connected slugs, a throat arranged in the line of drive and adaptedto receive a selected string from said guide, means for feeding and forcutting a selected string when positioned to be received by said throat,and means for shifting said guide to selectively position a selectedstring into 00' operative relation with respect to said throat, allconstructed and arranged to position in said throat a selected cutfastener or slug to be driven by said driver.

at. In a machine for selectively inserting fasteners or slugs, thecombination with a driver, of a guide for strings of connected fastenersof different lengths and a string of connected slugs, a throat arrangedin the line of drive and adapted to receive a selected string from saidguide, means for feeding and for cutting a selected string whenpositioned to be received by said throat, and means for shifting saidguide to selectively position a selected string into cooperativerelation with respect to said throat, all constructed and arranged toposition in said throat a selected cut fastener or slug to be driven bysaid driver.

35. In a machine for selectively inserting fasteners or slugs, thecombination with driving means, of means for guiding strings ofconnected fasteners and connected slugs, means for receiving fastenersand slugs in the plane of drive, means for feeding and for cutting aselected string when positioned in the plane of drive, a work feedingawl, means for moving said awl and said receiving means intoand out ofthe line of drive, and means for selectively positioning a selectedstring in the plane of drive, constructed and arranged to position insaid receiving means a selected cut fastener or slug to be driven bysaid driving means.

36. In a machine for selectively inserting fasteners or slugs, thecombination with a driver, of a guide for strings of connected fastenersand connected slugs, a throat arranged in the line of drive and adaptedto receive a selected string from said guide, means for feeding and forcutting a selected string when positioned to be received by said throat,a work feeding awl, means for moving said awl and said throat into andout of the line of drive, and means for shifting said guide toselectively position a selected string into 00* operative relation withrespect to said throat,

all constructed and arranged to position in said throat a selected cutfastener or slug to be driven by said driver.

In testimony whereof I aflix my signature this 6th day of October, 1917.

STEPHEN A. DOBYNE.

